Lipomas generally do not disappear on their own. They form due to abnormal or excessive growth in the subcutaneous fat, presenting as localized lumps with an outer membrane encapsulating them. Lipomas are typically soft with high mobility and well-defined borders. Small lipomas usually do not require surgical treatment; close monitoring to check for changes in size is sufficient. However, if a lipoma is large, causes local compression symptoms, or pain, surgical removal may be considered.